Efficient phosphorous stabilizers based on diphenylamine and heterocyclic diphenylamine derivatives
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsMichael Ciesielski, Max Briesenick, Rudolf Pfaendner
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Abstract
The present invention relates to the use of efficient phosphorous substances, in particular based on diphenylamine and heterocyclic diphenylamine derivatives as stabilizers for organic materials, in particular for plastic materials, against oxidative, thermal and/or actinic degradation. The present invention additionally relates to an organic material that has been correspondingly stabilized as described above. The invention further relates to a method of stabilizing organic materials and to specific stabilizers.
Claims7
A method of stabilizing an organic material comprising working into the organic material one or more compounds in accordance with general formula I,
- A-By, Formula I,
- wherein A is:
- and y=1, or
- wherein A is:
- and y=2, or
- wherein A is:
- and y=1,
- and B is:
- wherein, respectively independently of one another,
- R1 to R10 are selected from hydrogen, alkyl residues, aryl residues, alky aryl residues, aryl alkyl residues, and heterocyclic residues.
Dependencies are inferred from the claim text.